Gallery, Projects and General > Project Logs
Building Wildings Tower Clock
seadog:
Anything here of use to you?
https://www.ebay.co.uk/itm/20-x-Blue-Steel-Pivot-Wire-Assorted-Tempered-Clock-Repair-Pinions-Staffs-CX81A/253949644981?
https://www.ebay.co.uk/itm/Quality-Blue-Steel-Wire-Pinion-Pivot-Clock-Thin-Watch-Pocketwatch-Tempered-Rod/281159304097?
smiffy:
My Zeus gives no 54 as 1.4 and that is what I used . As far as I understand it, as a lantern pinion is only suitable to use as a driven gear the critic dimension is above the addendum so dimensions below the dedendum are less critical . I am not a expert on gearing but that is how I understand it .
The other question about the click spring is to lower screw head so it can not catch and snag on the line .The same applies to the screw in the click
I used round head screws instead. This is mentioned in the book I have
Mike
raynerd:
Sorry sorry... I can get 1.3 or 1.5mm not 1.4!! You are obsolutrly correct, 54 gauge is 1.397mm
I’ve been to Ian Cobb who can source everything and he can’t get 1.4mm...
So question back again. 1.3 or 1.5mm? I appreciate your mention about above the addendum being critical and I agree but isn’t this a worry as that suggests the diameter is the critical bit?
smiffy:
I doubt if using either size would make much difference .By there very essence lantern pinons are more forgiving to a fairly wide tolerance range than a conventional gear.
smiffy:
This is a bit nearer https://www.ebay.co.uk/itm/Quality-Blue-Steel-Wire-Pinion-Pivot-Clock-Thin-Watch-Pocketwatch-Tempered-Rod/281159304097?hash=item41766683a1:m:mwKtNQDlMK3L2Xnmfwk0-Cw:rk:1:pf:1&frcectupt=true
They list 1.45 mm
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